Watch-regulator.



No. 756,589. PATENTBD APR. 5, 1904. I W. W. GONOVBR.

WATCH REGULATOR.

APPLIoA'pIoN FILED MAR. a1, 1903.

N0 MODEL.

WJQS( A l I lum "l l UNITED STATES :Patented April 5, 1904.

PATENT OFFICE.,

Y WATCH-REGULATOR.

SPECIFICATION forming part'of Letters Patent No. 756,589, dated April 5, 1904.

Application filed Marchl, 1903.

'To all whom it may concern:

Be it known that I, WILLIAM WALLACE CoN- OVER, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Hair-Spring Regulators for Watches, Clocks, and other Timekeepers, of which lthe following is a specification.

My invention relates to improvements in hair-spring regulators for watches, clocks, and other' timepieces;and the object of the invention is'to devise an improvement in the construction of the hair-spring and ,its connection to the regulator whereby all lateral strain is removed from the balance-pivot of the spring when the regulator is being moved or is moved and the consequent friction on the pivot thereby minimized; and it consists, essen-l tially,of a hair-spring provided wi th a straight `detail as hereinafter more plained.

Figure l 1s a plan view showing portion of Y portion, preferably at the outer end, having a definite set in relation to the rest of the spring and designed to be connected with the end of stud, and a regulating-bar provided, preferably, with curb-pins extending one on each side of the straight set portion of the spring, the parts being arranged and constructed in particularly exthe movement of a watch, exhibiting the balance-wheel, hair-spring, and bearingplates,-

and regulator. Fig. 2 is a similar View showing the form and connection of the outer end of the hair-spring to the stud and the position of the blocks for regulating the tensionof the spring. Fig. 3 is an enlarged perspective detail showing the form of the outer end of the hair-spring and the connection to the regulating-bar and the connection of the outer end of the spring to the stud. Fig.. 4 is a cross-section through the regulating-bar and bearing-plate.

In the drawings like letters of reference indicate corresponding parts in each iigure.

A is a disk or plateof the movement, and B the balance-bridge.

C is the balance-wheel, D the balance-wheel pivot, and E the hair-spring, which is connected at the center to the pivot in the usual way. The hair-spring Eis preferably bent Serial No. 150,405. (No model.)

Yinwardly near the outer end, and the remaining portion of the outer end of the spring is straight and preferably extends across the top of the spring, the bent and straight portion being given a set in the formation of the spring. Of course it will be understood that the set given may be across the top of the spring or tangentially, or even the straight portion of the spring may not necessarily be at the end of the spring. In the present instance, however, I show the extreme end of.

the spring held in the stud F. The inward bend of the spring I designate e, and the straight portion I designate e. v

G is the regulating-bar, which fits within a dovetailed groove g in the balance-bridge.

g g are curb-pins extending downwardly from the outer end of the regulating-bar on each side of the straight portion of the spring.

His the threaded spindle, having the flat end h, secured to the bearing-plate B, and the grooved collar L, into which extends the tongue g2 from the regulating bar. The screw-spindle and its coacting parts are such as are usually employed, and I lay no claim to same; but they are merely shown so as to exhibit a means for adjusting the position of the regulatingbar G.

The straight portion of the spring is on a line with the regulating-bar. It will consequently be seen that by moving the regulating-bar, andconsequently the curb-pins g g', inwardly or outwardly the tension of the spring will be correspondingly increased or diminished, so as to increase or diminish the rapidity of the movement in the watch. This regulating, it will be readily understood from IOO groove, curb-pins depending from said bar and a tongue extending from said bar and engaging the groove in said nut, substantially as described.

3. In a regulator for Watches, clocks and the like, a central pivot-pin, a hair-spring suitably fastened at the inner end to the said pin and having a straight set portion, a pair ol' blocks having straight fiat inner faces adapted to abut the straight set portion on cach side, and a bar arranged in alinement with the straight set portion and held in suitable guide- Ways and carrying the said blocks, whereby the position of such blocks is adjusted longitndinally parallel with the straight portion of the spring Without disturbing the alinement 30 thereof, as specified.

A WILLIAM WALLACE CONOVER.

Witnesses:

B. BOYD, H. STRICKLAND. 

